Pentax K-S1 vs Sigma SD15
69 Imaging
63 Features
70 Overall
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59 Imaging
44 Features
45 Overall
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Pentax K-S1 vs Sigma SD15 Key Specs
(Full Review)
- 20MP - APS-C Sensor
- 3" Fixed Display
- ISO 100 - 51200
- Sensor based Image Stabilization
- No Anti-Alias Filter
- 1/6000s Max Shutter
- 1920 x 1080 video
- Pentax KAF2 Mount
- 558g - 121 x 93 x 70mm
- Released August 2014
- Renewed by Pentax K-S2
(Full Review)
- 5MP - APS-C Sensor
- 3" Fixed Screen
- ISO 100 - 1600 (Raise to 3200)
- No Video
- Sigma SA Mount
- 750g - 144 x 107 x 81mm
- Announced February 2010
- Previous Model is Sigma SD14
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Let's look much closer at the Pentax K-S1 and Sigma SD15, both Advanced DSLR cameras by companies Pentax and Sigma. There exists a considerable gap among the sensor resolutions of the K-S1 (20MP) and SD15 (5MP) but both cameras have the same sensor sizing (APS-C).
Sora from OpenAI releases its first ever music videoThe K-S1 was revealed 4 years after the SD15 which is a fairly large difference as far as camera technology is concerned. Both of these cameras have the same body design (Mid-size SLR).
Before diving right into a full comparison, here is a simple highlight of how the K-S1 matches up against the SD15 in regards to portability, imaging, features and an overall mark.
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Here is a preview of the gallery photos for Pentax K-S1 & Sigma SD15. The full galleries are provided at Pentax K-S1 Gallery & Sigma SD15 Gallery.
Reasons to pick Pentax K-S1 over the Sigma SD15
| K-S1 | SD15 | |||
|---|---|---|---|---|
| Announced | August 2014 |  | February 2010 | Newer by 55 months |
| Screen resolution | 921k |  | 460k | Crisper screen (+461k dot) |
Reasons to pick Sigma SD15 over the Pentax K-S1
| SD15 | K-S1 |
|---|
Common features in the Pentax K-S1 and Sigma SD15
| K-S1 | SD15 | |||
|---|---|---|---|---|
| Manual focus |  | Very accurate focus | ||
| Screen type | Fixed |  | Fixed | Fixed screen |
| Screen dimensions | 3" |  | 3" | Equal screen measurement |
| Selfie screen |  | Lacking selfie screen | ||
| Touch friendly screen |  | Neither provides Touch friendly screen |
Pentax K-S1 vs Sigma SD15 Physical Comparison
If you are going to travel with your camera frequently, you have to factor its weight and proportions. The Pentax K-S1 provides exterior measurements of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") and a weight of 558 grams (1.23 lbs) and the Sigma SD15 has measurements of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") along with a weight of 750 grams (1.65 lbs).
Compare the Pentax K-S1 and Sigma SD15 in our completely new Camera plus Lens Size Comparison Tool.
Keep in mind, the weight of an ILC will vary depending on the lens you are utilizing at that time. Underneath is a front view size comparison of the K-S1 versus the SD15.
Taking into consideration dimensions and weight, the portability rating of the K-S1 and SD15 is 69 and 59 respectively.
Pentax K-S1 vs Sigma SD15 Sensor Comparison
More often than not, it can be hard to visualise the difference in sensor dimensions purely by looking through a spec sheet. The image underneath should offer you a better sense of the sensor measurements in the K-S1 and SD15.
As you can see, the 2 cameras provide the same sensor dimensions albeit not the same megapixels. You can count on the Pentax K-S1 to provide you with greater detail because of its extra 15 Megapixels. Higher resolution will also let you crop pictures more aggressively. The fresher K-S1 is going to have an edge with regard to sensor technology.
Pentax K-S1 vs Sigma SD15 Screen and ViewFinder
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Pentax K-S1 vs Sigma SD15 Specifications
| Pentax K-S1 | Sigma SD15 | |
|---|---|---|
| General Information | ||
| Manufacturer | Pentax | Sigma |
| Model type | Pentax K-S1 | Sigma SD15 |
| Category | Advanced DSLR | Advanced DSLR |
| Released | 2014-08-27 | 2010-02-20 |
| Physical type | Mid-size SLR | Mid-size SLR |
| Sensor Information | ||
| Chip | Prime MII | True II |
| Sensor type | CMOS | CMOS (Foveon X3) |
| Sensor size | APS-C | APS-C |
| Sensor measurements | 23.5 x 15.6mm | 20.7 x 13.8mm |
| Sensor surface area | 366.6mm² | 285.7mm² |
| Sensor resolution | 20 megapixels | 5 megapixels |
| Anti alias filter | ||
| Aspect ratio | 3:2 | 3:2 |
| Full resolution | 5472 x 3648 | 2640 x 1760 |
| Max native ISO | 51200 | 1600 |
| Max boosted ISO | - | 3200 |
| Minimum native ISO | 100 | 100 |
| RAW files | ||
| Minimum boosted ISO | - | 50 |
| Autofocusing | ||
| Focus manually | ||
| Autofocus touch | ||
| Continuous autofocus | ||
| Autofocus single | ||
| Autofocus tracking | ||
| Autofocus selectice | ||
| Center weighted autofocus | ||
| Autofocus multi area | ||
| Live view autofocus | ||
| Face detect focus | ||
| Contract detect focus | ||
| Phase detect focus | ||
| Total focus points | 11 | - |
| Lens | ||
| Lens mount type | Pentax KAF2 | Sigma SA |
| Amount of lenses | 151 | 76 |
| Focal length multiplier | 1.5 | 1.7 |
| Screen | ||
| Display type | Fixed Type | Fixed Type |
| Display size | 3 inch | 3 inch |
| Resolution of display | 921 thousand dots | 460 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch capability | ||
| Viewfinder Information | ||
| Viewfinder type | Optical (pentaprism) | Optical (pentaprism) |
| Viewfinder coverage | 100% | 96% |
| Viewfinder magnification | 0.64x | 0.6x |
| Features | ||
| Slowest shutter speed | 30 seconds | 30 seconds |
| Maximum shutter speed | 1/6000 seconds | 1/4000 seconds |
| Continuous shooting rate | 5.4 frames/s | 3.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Manual mode | ||
| Exposure compensation | Yes | Yes |
| Custom white balance | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash distance | 10.00 m (at ISO 100) | - |
| Flash settings | Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual | - |
| Hot shoe | ||
| Auto exposure bracketing | ||
| WB bracketing | ||
| Maximum flash synchronize | - | 1/180 seconds |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Video resolutions | 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps) | - |
| Max video resolution | 1920x1080 | None |
| Video format | H.264 | - |
| Microphone port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | Eye-Fi Connected | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | Optional | None |
| Physical | ||
| Environmental sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 558g (1.23 lbs) | 750g (1.65 lbs) |
| Physical dimensions | 121 x 93 x 70mm (4.8" x 3.7" x 2.8") | 144 x 107 x 81mm (5.7" x 4.2" x 3.2") |
| DXO scores | ||
| DXO All around rating | 78 | not tested |
| DXO Color Depth rating | 23.5 | not tested |
| DXO Dynamic range rating | 13.0 | not tested |
| DXO Low light rating | 1061 | not tested |
| Other | ||
| Battery life | 410 pictures | - |
| Style of battery | Battery Pack | - |
| Battery ID | D-LI109 | - |
| Self timer | Yes ( 2 or 12 seconds) | Yes (10 sec) |
| Time lapse shooting | ||
| Type of storage | SD/SDHC/SDXC | SD/SDHC card |
| Card slots | 1 | 1 |
| Retail cost | $339 | $1,500 |